Showing 4 Abstracts.
Functional magnetic resonance urography (fMRU) provides not only anatomic information but quantitative functional information as well. Several free tools are available to perform functional analysis. One such tool, CHOP-fMRU, is appealing because its creators have provided extensive instructions on their software and scan protocols. Several barriers were encountered in attempting to implement CHOP-fMRU at OHSU. First, to perform the analysis, the appropriate DICOM files must be acquired from PACS. CHOP-fMRU is compatible with a limited number of transfer syntaxes, so a conversion is required after PACS download if the encoding is incompatible. Second, CHOP-fMRU is incompatible with some types of data elements that can be found in files with valid DICOM formats. Third, only the dynamic series can be included when importing a study into CHOP-fMRU, and every image in the set must be present. If an image from another series is included or an image from the dynamic series is excluded, the user encounters an error. Finally, when the analysis has been performed, it is desirable to send the results to PACS. Unless the user has purchased an Interactive Data Language (IDL) license, the images may only be exported as JPEG files. These files must be packaged into DICOM files with the correct header data before they are sent to PACS using DICOM network protocol. While these tasks could each be accomplished with any one of many available DICOM tools, some of the tasks are moderately complex, and performing them manually would be time consuming. Instead, an additional piece of software desigend solely to perform these functions as simply and efficiently as possible can be helpful. Such a solution was attempted at OHSU, and the resulting software, CHOP-fMRU Assistant, is presented here. CHOP-fMRU Assistant is a program written in C# using the Grassroots DICOM (GDCM) library. Current features include automatic transfer syntax conversion, removal of many potentially incompatible data elements, easy exclusion of unwanted series, analysis of the dynamic series for missing images, and conversion of the results from CHOP-fMRU to DICOM files for upload to PACS. CHOP-fMRU Assistant is available at https://github.com/overtone1000/CHOP-fMRU_Assistant under an open-source license and is offered with an associated wiki to help other institutions who have encountered similar barriers while attempting to implement CHOP-fMRU. Read More
Meeting name: SPR 2017 Annual Meeting & Categorical Course , 2017
Authors: Moore Tyler, Hopkins Katharine
Keywords: MR, Functional, Renal
Cecostomy tubes are not uncommonly encountered in a busy pediatric radiology practice but can pose a challenge to the unfamiliar. These devices provide access to the colon for routine antegrade enemas to promote bowel regularity and continence, most commonly in children with spinal dysraphism. This educational exhibit will describe the typical routine for cecostomy tube exchange, characterized by the Seldinger technique, and describe interesting cases of more difficult exchanges and complications, including different scenarios of broken and malpositioned tubes, and a practical approach to management of these challenges. After viewing this exhibit, the radiologist should be armed with several strategies for approaching both routine and complicated cecostomy tube exchanges. Read More
Meeting name: IPR 2016 Conjoint Meeting & Exhibition , 2016
Authors: Basta Amaya, Vajtai Petra, Hopkins Katharine, Schmitz Kelli
Fat, like any other organ or tissue, can cause both disease and symptomatology. In the pediatric abdomen and pelvis, fat may be involved by a number of conditions, ranging from symptomatic to occult, self-limited to progressive, benign to malignant. This is a review of multimodality cross-sectional imaging findings associated with abdominopelvic fat pathology in children. Read More
Meeting name: IPR 2016 Conjoint Meeting & Exhibition , 2016
Authors: Thiessen Jaclyn, Moore Ryan, Schmitz Kelli, Vajtai Petra, Hopkins Katharine
Keywords: Pathological fat, ultrasound, pediatrics, CT, MRI
Renal trauma is not uncommon in the pediatric population and can be seen in a wide variety of settings, from minor sports-related injuries to serious motor vehicle accidents. The imaging appearance is as varied as the etiology of injuries, ranging from minor parenchymal defects to avulsion of the vascular pedicle. Our educational poster aims at exploring a variety of injuries of the kidney in children, including chronic subcapsular hematoma, different severities of laceration, renal rupture without and with urine extravasation, injuries to the ureter, trauma involving kidneys with congenital anomalies, and trauma in an undiagnosed Wilms' tumor. Because renal trauma can present with many different faces, we aim to highlight essential diagnostic pearls as well as some unusual factors which may predispose the kidney to injury. Read More
Meeting name: IPR 2016 Conjoint Meeting & Exhibition , 2016
Authors: Moore Ryan, Basta Amaya, Schmitz Kelli, Hopkins Katharine, Vajtai Petra
Keywords: renal, trauma, injury, hematoma, laceration